Test FC-1A - Checking System For Fault Codes

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS at the end of this article.

NOTE: Battery must be fully charged before proceeding.

Try to start engine. If necessary, crank engine for up to 10 seconds. Connect DRB-II to data link connector. Record DRB-II fault messages. If DRB-II screen displays NO RESPONSE, go to TEST NS-6A.
If DRB-II has a blank screen or displays RAM TEST FAILURE, CARTRIDGE ERROR, KEY PAD TEST FAILURE, or LOW OR HIGH BATTERY, this indicates a DRB-II failure. To diagnose and correct these conditions, see G - BODY TESTS W/CODES article in the ENGINE PERFORMANCE Section.
If fault messages are displayed, refer to fault code list. See DRB-II FAULT MESSAGES table. If DRB-II does not display any fault messages, refer to TEST NF-1A for no fault codes or TEST NS-1A for no-start problems.

DRB-II FAULT MESSAGES

DTC

DRB-II Message

Test No.

Code 11

NO CRANK REFERENCE SIGNAL AT PCM

FC-2A

Code 54

NO CAM SYNC SIGNAL AT PCM

FC-3A

Code 13

NO CHANGE IN MAP FROM START TO RUN

FC-4A

Code 14

MAP SENSOR VOLTAGE TOO LOW

FC-5A

Code 14

MAP SENSOR VOLTAGE TOO HIGH

FC-6A

Code 15

NO VEHICLE SPEED SENSOR SIGNAL

FC-7A

Code 21

O2S STAYS AT CENTER

FC-8A

Code 52

O2S STAYS ABOVE CENTER (RICH)

FC-9A

Code 51

O2S STAYS BELOW CENTER (LEAN)

FC-10A

Code 21

O2S SHORTED TO VOLTAGE

FC-11A

Code 22

ECT SENSOR VOLTAGE TOO LOW

FC-12A

Code 22

ECT SENSOR VOLTAGE TOO HIGH

FC-13A

Code 24

THROTTLE POSITION SENSOR VOLTAGE LOW

FC-14A

Code 24

THROTTLE POSITION SENSOR VOLTAGE HIGH

FC-15A

Code 25

IDLE AIR CONTROL MOTOR CIRCUITS

FC-16A

Code 27

INJECTOR #1 CONTROL CIRCUIT

FC-17A

Code 27

INJECTOR #2 CONTROL CIRCUIT

FC-18A

Code 27

INJECTOR #3 CONTROL CIRCUIT

FC-19A

Code 27

INJECTOR #4 CONTROL CIRCUIT

FC-20A

Code 27

INJECTOR #5 CONTROL CIRCUIT

FC-21A

Code 27

INJECTOR #6 CONTROL CIRCUIT

FC-22A

Code 62

PCM FAILURE SRI MILE NOT STORED

FC-23A

Code 63

PCM FAILURE EEPROM WRITE DENIED

FC-23A

Code 32

EGR SYSTEM FAILURE

FC-24A

Code 32

EGR SOLENOID CIRCUIT

FC-25A

Code 31

EVAP PURGE SOLENOID CIRCUIT

FC-26A

Code 37

TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT

FC-27A

Code 42

NO ASD RELAY VOLT SENSE AT PCM

FC-28A

Code 42

AUTO SHUTDOWN RELAY CONTROL CIRCUIT

FC-29A

Code 33

A/C CLUTCH RELAY CIRCUIT

FC-30A

Code 35

RADIATOR FAN CONTROL RELAY CIRCUIT

FC-31A

Code 17

ENGINE IS COLD TOO LONG

⁽¹⁾

Code 53

INTERNAL PCM FAILURE

⁽²⁾

Code 41

GENERATOR FIELD NOT SWITCHING PROPERLY

⁽³⁾

Code 47

CHARGING SYSTEM VOLTAGE TOO LOW

⁽³⁾

Code 46

CHARGING SYSTEM VOLTAGE TOO HIGH

⁽³⁾

Code 34

SPEED CONTROL SOLENOID CIRCUITS

⁽⁴⁾

⁽¹⁾	If engine temperature does not reach 176°F (80°C) after 20 minutes of driving, check cooling system. This code may also set in error during very cold slow speed driving.

⁽²⁾	Replace Powertrain Control Module (PCM) and perform VERIFICATION PROCEDURE VER-1.

⁽³⁾	Refer to appropriate ALTERNATOR/REGULATOR article in the ELECTRICAL Section.

⁽⁴⁾	Refer to appropriate CRUISE CONTROL SYSTEMS article in the ACCESSORIES/SAFETY EQUIPMENT Section.